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  • Publication details - IFISC
    The identification of key populations shaping the structure and connectivity of metapopulation systems is a major challenge in population ecology The use of molecular markers in the theoretical framework of population genetics has allowed great advances in this field but the prime question of quantifying the role of each population in the system remains unresolved Furthermore the use and interpretation of classical methods are still bounded by the need for a priori information and underlying assumptions that are seldom respected in natural systems Network theory was applied to map the genetic structure in a metapopulation system using microsatellite data from populations of a threatened seagrass Posidonia oceanica across its whole geographical range The network approach free from a priori assumptions and of usual underlying hypothesis required for the interpretation of classical analysis allows both the straightforward characterization of hierarchical population structure and the detection of populations acting as hubs critical for relaying gene flow or sustaining the metapopulation system This development opens major perspectives in ecology and evolution in general particularly in areas such as conservation biology and epidemiology where targeting specific populations is crucial DOI 10 1073 pnas 0805571105 Identificador ArXiv 0810 3488 Fitxers movie1 avi 1272832 Bytes PNAS

    Original URL path: http://ifisc.uib-csic.es/publications/publication-detail.php?indice=1863 (2016-02-15)
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  • Publication details - IFISC
    induced Structural Changes in the Cornea on Pneumotonometric Measurements Contributions of Flap Cutting and Stromal Ablation Sánchez Navés Juan Furfaro Luca Piro Oreste Balle Salvador Journal of Glaucoma 17 611 618 2008 DOI 10 1097 IJG 0b013e3181639ae2 Fitxers Tornar a la llista de publicacions Cerca publicacions Conté la paraula es Operador AND OR NOT Paraules adicionals Línia d investigació Totes Complex Quantum Optics Fluids Biosystems Social Outreach Cerca avançada Xerrades

    Original URL path: http://ifisc.uib-csic.es/publications/publication-detail.php?indice=1994 (2016-02-15)
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  • Publication details - IFISC
    which is emergent property since the system is not locally excitable The resulting scenario differs in an important way from the case of a purely homogeneous pump and now two different excitable regimes both Class I are shown The whole scenario is presented and discussed showing that it is organized by three codimension 2 points Moreover the localized beam can be used to control important features such as the excitable

    Original URL path: http://ifisc.uib-csic.es/publications/publication-detail.php?indice=1928 (2016-02-15)
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  • Publication details - IFISC
    about these systems and predict new phenomena In the present paper we discuss the concept of universal functions and their relevance to the theory of universal differential equations We present a connection between universal functions and solutions to chaotic systems We will show the statistical independence between X t and X t tau when tau is not equal to zero and X t is a solution to some chaotic systems

    Original URL path: http://ifisc.uib-csic.es/publications/publication-detail.php?indice=1959 (2016-02-15)
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  • Publication details - IFISC
    low to moderate coupling strengths and injection locking at large coupling strength We find that a receiver subject to a feedback similar to that of the emitter closed loop receiver shows better synchronization with the master laser when compared with a receiver without feedback open loop receiver Closed loop receivers also show better capability to recover weak messages The filter in the feedback loop allows reducing the bandwidth of the

    Original URL path: http://ifisc.uib-csic.es/publications/publication-detail.php?indice=1878 (2016-02-15)
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  • Publication details - IFISC
    can amount to several tens of milliseconds It is still unclear which mechanism is giving rise to isochronous discharge of widely distributed neurons despite of such latencies Here we investigate the synchronization properties of a simple network motif and found that even in the presence of large axonal conduction delays distant neuronal populations self organize into lag free oscillations According to our results cortico cortical association fibers as well as

    Original URL path: http://ifisc.uib-csic.es/publications/publication-detail.php?indice=1925 (2016-02-15)
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  • Publication details - IFISC
    director Toral Raúl Memòria Investigació UIB 2008 Fitxers memoria NikoKomin pdf 1001610 Bytes Tornar a la llista de publicacions Cerca publicacions Conté la paraula es Operador AND OR NOT Paraules adicionals Línia d investigació Totes Complex Quantum Optics Fluids Biosystems

    Original URL path: http://ifisc.uib-csic.es/publications/publication-detail.php?indice=1970 (2016-02-15)
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  • Publication details - IFISC
    at zero lag even in the presence of non negligible delays in the transfer of information between them So far complex mechanisms and neural architectures have been proposed to answer this question However a simple and robust mechanism has been proposed recently Zero lag synchronization between two elements is achieved by relaying the dynamics via a third mediating element The synchronization thus obtained is robust over a considerable parameter range In this work we study the dynamical relay phenomenon in complex networks of chemically coupled neurons specifically the capacity to provide the basis for the binding by synchrony process We show that three identical neuronal populations satisfy the minimum conditions to produce lag free synchrony among delayed populations reciprocally connected to a central relay population We also investigate the dynamical behavior of the thalamocortical circuit whose relay station role is played by the thalamus We found that the thalamocortical circuit supports the dynamical relay mechanism More importantly we report the identification of a variable that might be responsible to control the on off synchronization of the cortical populations depending only on the ratio of dorsal over ventral thalamus external activity The simplicity of the key controlling element in the model

    Original URL path: http://ifisc.uib-csic.es/publications/publication-detail.php?indice=1940 (2016-02-15)
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